With an effective in-car navigation system at your side, you can say goodbye to the good old days of pulling over and asking directions. But designing an effective system, one that brings together the right mix of speed, accuracy, and simplicity has been a long, hard road for many manufacturers--leading many folks to stick with the human touch of the gas station attendant. The latest in-car GPS units deserve a serious look, though, especially by those who've sworn them off as too inaccurate, too complicated, and too expensive. The TomTom GO 910 embodies much of what's really great about the next generation of systems, and in many ways it's successful at making drivers feel as if there's a helpful guide along for the ride.